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A potter's wheel is rotating at 3.2 rad/s in a counterclockwise direction when the potter turns it off and lets it slow to a stop. This takes 26 s. Find the average angular acceleration of wheel during this time?
An infinitely long cylinder has a circular cross section of radius a and its axis along the z axis. A steady current I is distributed uniformly over the cross section and is in the positive z direction. Please, read the document carefully, it ..
A block is sliding to the right up a inclined plane (10 degrees) at an initial speed of 0.5 m/s. The coeffecient of friction is 0.3. how large must the minimum coefficient of static friction be
A steel ball ( 66.45 g) located 103.15 cm above the ground isshot in the horizontal direction. Calculate the momentum of the steel ball in the horizontal direction
The spindle of a stirrer rotating at 2100 rpm slows down uniformly to 900 rpm while making 80 revolutions. Compute the angular acceleration of the stirrer and the time required to slow down.
A 0.60kg basketball is dropped out of a window that is 6.1m above the ground. The ball is caught by a person whose hands are 1.5m above the ground. how much work is done on the ball by its weight
The average lifetime of a pi meson in its own frame of reference is 2.6×10-8 s. (This is the proper lifetime.), What is the average distance it travels before decaying
An electron acquires 100fJ of kinetic energy when it is accelerated between two paralle lplates placed at a distance of 1mm
An unstable atomic nucleus of mass 1.76 10-26 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.12 10-27 kg, calculate the total kinetic energy increase in the process
a positive point charge q 6.6 x 10-8 c is surrounded by an equipotential surface a which has a radius of ra 2.7 m. a
suppose a diode consists of a cylindrical cathode with a radius of 6.200times10-2 cm mounted coaxially within a
A violin string is 33 cm long. The wave speed is 140 m/s. what are the wavelengths of the first 3 harmonics
An archer's bow is drawn at its midpoint until the tension inthe string is 1.20 times the force exerted by the archer. What is the angle between the two halves of the string
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